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Developer Builds Zero-Dependency Node.js Tool to Block Secrets Before Git Commits

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A developer has released Secret-Scrub, an open-source Node.js CLI tool designed to prevent accidental exposure of API keys and credentials in Git repositories. The tool uses two detection layers: regex-based signature matching for known token formats such as AWS, GitHub, Stripe, and OpenAI keys, and Shannon entropy analysis to catch high-randomness strings without vendor prefixes. It integrates directly as a Git pre-commit hook, automatically blocking any commit that contains a suspected secret before it can be pushed. A staged-only scan mode limits checks to files currently queued for commit, completing the process in under 40 milliseconds to minimise disruption to developer workflows. Secret-Scrub is available on GitHub under the MIT licence and can be installed via a single npx command.

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